/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false -i ../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 00:20:56,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 00:20:56,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 00:20:56,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 00:20:56,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 00:20:56,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 00:20:56,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 00:20:56,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 00:20:56,112 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 00:20:56,115 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 00:20:56,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 00:20:56,115 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 00:20:56,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 00:20:56,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 00:20:56,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 00:20:56,117 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 00:20:56,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 00:20:56,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 00:20:56,117 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 00:20:56,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 00:20:56,118 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 00:20:56,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 00:20:56,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 00:20:56,118 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 00:20:56,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 00:20:56,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 00:20:56,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 00:20:56,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 00:20:56,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 00:20:56,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 00:20:56,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 00:20:56,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 00:20:56,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 00:20:56,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2023-11-30 00:20:56,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 00:20:56,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 00:20:56,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 00:20:56,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 00:20:56,338 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 00:20:56,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym-pthread.i [2023-11-30 00:20:57,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 00:20:57,553 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 00:20:57,553 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym-pthread.i [2023-11-30 00:20:57,563 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcef214e7/58c3bade2d884e1f9dce1f19d2082407/FLAG58f4b539b [2023-11-30 00:20:57,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcef214e7/58c3bade2d884e1f9dce1f19d2082407 [2023-11-30 00:20:57,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 00:20:57,574 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 00:20:57,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 00:20:57,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 00:20:57,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 00:20:57,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260a97e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57, skipping insertion in model container [2023-11-30 00:20:57,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,615 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 00:20:57,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 00:20:57,858 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 00:20:57,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 00:20:57,918 INFO L206 MainTranslator]: Completed translation [2023-11-30 00:20:57,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57 WrapperNode [2023-11-30 00:20:57,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 00:20:57,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 00:20:57,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 00:20:57,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 00:20:57,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,963 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 91 [2023-11-30 00:20:57,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 00:20:57,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 00:20:57,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 00:20:57,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 00:20:57,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:57,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 00:20:57,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 00:20:57,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 00:20:57,990 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 00:20:57,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (1/1) ... [2023-11-30 00:20:58,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 00:20:58,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 00:20:58,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 00:20:58,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 00:20:58,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 00:20:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-30 00:20:58,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-30 00:20:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 00:20:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 00:20:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 00:20:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 00:20:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 00:20:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 00:20:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 00:20:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 00:20:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 00:20:58,104 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 00:20:58,225 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 00:20:58,226 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 00:20:58,352 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 00:20:58,364 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 00:20:58,364 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 00:20:58,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:58 BoogieIcfgContainer [2023-11-30 00:20:58,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 00:20:58,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 00:20:58,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 00:20:58,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 00:20:58,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:20:57" (1/3) ... [2023-11-30 00:20:58,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251d037c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:20:58, skipping insertion in model container [2023-11-30 00:20:58,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:57" (2/3) ... [2023-11-30 00:20:58,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251d037c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:20:58, skipping insertion in model container [2023-11-30 00:20:58,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:58" (3/3) ... [2023-11-30 00:20:58,371 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-pthread.i [2023-11-30 00:20:58,383 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 00:20:58,383 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-30 00:20:58,383 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 00:20:58,460 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:20:58,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 105 transitions, 214 flow [2023-11-30 00:20:58,523 INFO L124 PetriNetUnfolderBase]: 8/116 cut-off events. [2023-11-30 00:20:58,523 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 00:20:58,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 116 events. 8/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2023-11-30 00:20:58,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 105 transitions, 214 flow [2023-11-30 00:20:58,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 105 transitions, 214 flow [2023-11-30 00:20:58,536 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:20:58,540 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@179a456e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:20:58,541 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-30 00:20:58,551 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:20:58,551 INFO L124 PetriNetUnfolderBase]: 2/56 cut-off events. [2023-11-30 00:20:58,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 00:20:58,552 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:20:58,552 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:20:58,553 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-30 00:20:58,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:20:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1870203597, now seen corresponding path program 1 times [2023-11-30 00:20:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:20:58,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517053872] [2023-11-30 00:20:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:20:58,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:20:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:20:58,653 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:20:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:20:58,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:20:58,686 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:20:58,687 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-30 00:20:58,688 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-30 00:20:58,689 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-30 00:20:58,689 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-30 00:20:58,689 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-30 00:20:58,689 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-30 00:20:58,689 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-30 00:20:58,689 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-30 00:20:58,689 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-30 00:20:58,690 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 00:20:58,690 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-30 00:20:58,694 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:20:58,694 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 00:20:58,748 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:20:58,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 171 transitions, 352 flow [2023-11-30 00:20:58,816 INFO L124 PetriNetUnfolderBase]: 15/195 cut-off events. [2023-11-30 00:20:58,816 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 00:20:58,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 195 events. 15/195 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 342 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-11-30 00:20:58,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 171 transitions, 352 flow [2023-11-30 00:20:58,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 171 transitions, 352 flow [2023-11-30 00:20:58,831 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:20:58,833 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@179a456e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:20:58,833 INFO L363 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-30 00:20:58,852 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:20:58,852 INFO L124 PetriNetUnfolderBase]: 4/86 cut-off events. [2023-11-30 00:20:58,852 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 00:20:58,852 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:20:58,853 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:20:58,853 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-30 00:20:58,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:20:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1804350252, now seen corresponding path program 1 times [2023-11-30 00:20:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:20:58,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561709338] [2023-11-30 00:20:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:20:58,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:20:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:20:58,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:20:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:20:58,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:20:58,926 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:20:58,926 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-30 00:20:58,926 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-30 00:20:58,926 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-30 00:20:58,926 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-30 00:20:58,926 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-30 00:20:58,927 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-30 00:20:58,927 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-30 00:20:58,927 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-30 00:20:58,927 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-30 00:20:58,927 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-30 00:20:58,927 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-30 00:20:58,927 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-30 00:20:58,928 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-30 00:20:58,928 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 00:20:58,928 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-30 00:20:58,928 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:20:58,928 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-30 00:20:58,991 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:20:58,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 237 transitions, 492 flow [2023-11-30 00:20:59,038 INFO L124 PetriNetUnfolderBase]: 22/274 cut-off events. [2023-11-30 00:20:59,038 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 00:20:59,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 274 events. 22/274 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 710 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 208. Up to 8 conditions per place. [2023-11-30 00:20:59,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 237 transitions, 492 flow [2023-11-30 00:20:59,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 237 transitions, 492 flow [2023-11-30 00:20:59,046 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:20:59,048 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@179a456e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:20:59,049 INFO L363 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-30 00:20:59,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:20:59,062 INFO L124 PetriNetUnfolderBase]: 7/127 cut-off events. [2023-11-30 00:20:59,062 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 00:20:59,062 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:20:59,062 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:20:59,063 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-30 00:20:59,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:20:59,063 INFO L85 PathProgramCache]: Analyzing trace with hash 635554858, now seen corresponding path program 1 times [2023-11-30 00:20:59,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:20:59,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62622295] [2023-11-30 00:20:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:20:59,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:20:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:20:59,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:20:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:20:59,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:20:59,145 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:20:59,145 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-30 00:20:59,146 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-30 00:20:59,146 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-30 00:20:59,146 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-30 00:20:59,146 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-30 00:20:59,146 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-30 00:20:59,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-30 00:20:59,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-30 00:20:59,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-30 00:20:59,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-30 00:20:59,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-30 00:20:59,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-30 00:20:59,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-30 00:20:59,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-30 00:20:59,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-30 00:20:59,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-30 00:20:59,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-30 00:20:59,151 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 00:20:59,151 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-30 00:20:59,153 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:20:59,153 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-30 00:20:59,207 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:20:59,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 303 transitions, 634 flow [2023-11-30 00:20:59,274 INFO L124 PetriNetUnfolderBase]: 29/353 cut-off events. [2023-11-30 00:20:59,275 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-30 00:20:59,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 353 events. 29/353 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1106 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 282. Up to 10 conditions per place. [2023-11-30 00:20:59,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 303 transitions, 634 flow [2023-11-30 00:20:59,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 303 transitions, 634 flow [2023-11-30 00:20:59,284 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:20:59,284 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@179a456e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:20:59,284 INFO L363 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-30 00:20:59,296 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:20:59,296 INFO L124 PetriNetUnfolderBase]: 9/144 cut-off events. [2023-11-30 00:20:59,296 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-30 00:20:59,296 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:20:59,297 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:20:59,297 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-30 00:20:59,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:20:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2022610311, now seen corresponding path program 1 times [2023-11-30 00:20:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:20:59,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950323457] [2023-11-30 00:20:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:20:59,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:20:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 00:20:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 00:20:59,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 00:20:59,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950323457] [2023-11-30 00:20:59,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950323457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 00:20:59,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 00:20:59,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 00:20:59,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870149145] [2023-11-30 00:20:59,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 00:20:59,832 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 00:20:59,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 00:20:59,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 00:20:59,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-30 00:20:59,859 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 303 [2023-11-30 00:20:59,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 303 transitions, 634 flow. Second operand has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:20:59,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 00:20:59,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 303 [2023-11-30 00:20:59,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 00:21:15,908 INFO L124 PetriNetUnfolderBase]: 57686/137877 cut-off events. [2023-11-30 00:21:15,917 INFO L125 PetriNetUnfolderBase]: For 18228/18228 co-relation queries the response was YES. [2023-11-30 00:21:16,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221303 conditions, 137877 events. 57686/137877 cut-off events. For 18228/18228 co-relation queries the response was YES. Maximal size of possible extension queue 4410. Compared 1824496 event pairs, 25890 based on Foata normal form. 43021/157141 useless extension candidates. Maximal degree in co-relation 79277. Up to 38748 conditions per place. [2023-11-30 00:21:17,979 INFO L140 encePairwiseOnDemand]: 279/303 looper letters, 169 selfloop transitions, 5 changer transitions 0/387 dead transitions. [2023-11-30 00:21:17,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 387 transitions, 1234 flow [2023-11-30 00:21:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 00:21:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 00:21:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1605 transitions. [2023-11-30 00:21:17,992 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8828382838283828 [2023-11-30 00:21:17,993 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1605 transitions. [2023-11-30 00:21:17,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1605 transitions. [2023-11-30 00:21:17,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 00:21:17,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1605 transitions. [2023-11-30 00:21:18,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.5) internal successors, (1605), 6 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:21:18,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 303.0) internal successors, (2121), 7 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:21:18,007 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 303.0) internal successors, (2121), 7 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:21:18,009 INFO L307 CegarLoopForPetriNet]: 287 programPoint places, -14 predicate places. [2023-11-30 00:21:18,009 INFO L500 AbstractCegarLoop]: Abstraction has has 273 places, 387 transitions, 1234 flow [2023-11-30 00:21:18,010 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:21:18,010 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:21:18,010 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:21:18,010 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 00:21:18,010 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-30 00:21:18,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:21:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash -859432939, now seen corresponding path program 1 times [2023-11-30 00:21:18,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:21:18,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142954908] [2023-11-30 00:21:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:21:18,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:21:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:21:18,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:21:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:21:18,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:21:18,044 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:21:18,044 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-30 00:21:18,045 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-11-30 00:21:18,045 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-11-30 00:21:18,045 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-11-30 00:21:18,045 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-11-30 00:21:18,045 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-11-30 00:21:18,045 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-11-30 00:21:18,045 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-11-30 00:21:18,045 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-11-30 00:21:18,045 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-11-30 00:21:18,045 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-11-30 00:21:18,046 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-11-30 00:21:18,046 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-11-30 00:21:18,046 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-11-30 00:21:18,046 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-11-30 00:21:18,047 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-11-30 00:21:18,047 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-11-30 00:21:18,047 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-11-30 00:21:18,047 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-11-30 00:21:18,047 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-11-30 00:21:18,047 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-11-30 00:21:18,048 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 00:21:18,048 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-30 00:21:18,048 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:21:18,048 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-30 00:21:18,088 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:21:18,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 369 transitions, 778 flow [2023-11-30 00:21:18,147 INFO L124 PetriNetUnfolderBase]: 36/432 cut-off events. [2023-11-30 00:21:18,147 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-30 00:21:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 432 events. 36/432 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1509 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 366. Up to 12 conditions per place. [2023-11-30 00:21:18,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 369 transitions, 778 flow [2023-11-30 00:21:18,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 369 transitions, 778 flow [2023-11-30 00:21:18,159 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:21:18,159 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@179a456e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:21:18,159 INFO L363 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-30 00:21:18,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:21:18,167 INFO L124 PetriNetUnfolderBase]: 10/147 cut-off events. [2023-11-30 00:21:18,167 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-30 00:21:18,167 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:21:18,167 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:21:18,168 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-30 00:21:18,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:21:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash 149272232, now seen corresponding path program 1 times [2023-11-30 00:21:18,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:21:18,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461376182] [2023-11-30 00:21:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:21:18,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:21:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 00:21:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 00:21:18,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 00:21:18,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461376182] [2023-11-30 00:21:18,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461376182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 00:21:18,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 00:21:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 00:21:18,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301600758] [2023-11-30 00:21:18,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 00:21:18,378 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 00:21:18,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 00:21:18,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 00:21:18,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-30 00:21:18,382 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 369 [2023-11-30 00:21:18,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 369 transitions, 778 flow. Second operand has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:21:18,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 00:21:18,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 369 [2023-11-30 00:21:18,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand